reid from https://github.com/michuanhaohao/reid-strong-baseline
zhangmeng
2020-01-17 f7c4a3cfd07adede3308f8d9d3d7315427d90a7c
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#pragma once
 
#include "caffe2/core/context.h"
#include "caffe2/core/logging.h"
#include "caffe2/core/operator.h"
#include "caffe2/utils/math.h"
 
namespace caffe2 {
 
// support multiple batches of sessions
template <typename T, class Context>
class PairWiseLossOp final : public Operator<Context> {
 public:
  USE_SIMPLE_CTOR_DTOR(PairWiseLossOp);
  USE_OPERATOR_CONTEXT_FUNCTIONS;
  bool RunOnDevice() override;
 
 private:
  INPUT_TAGS(XVALUE, LABEL, LENGTHS);
  OUTPUT_TAGS(YVALUE);
};
 
template <typename T, class Context>
class PairWiseLossGradientOp final : public Operator<Context> {
 public:
  USE_SIMPLE_CTOR_DTOR(PairWiseLossGradientOp);
  USE_OPERATOR_CONTEXT_FUNCTIONS;
  bool RunOnDevice() override;
 
 private:
  INPUT_TAGS(XVALUE, LABEL, DYVALUE, LENGTHS);
  OUTPUT_TAGS(DXVALUE);
};
 
} // namespace caffe2